From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Michael Albinus Newsgroups: gmane.emacs.bugs Subject: bug#49714: 28.0.50; TRAMP burns CPU and has insufficient user reporting when using xxxx-sk SSH keys Date: Sat, 24 Jul 2021 20:44:15 +0200 Message-ID: <87czr7o8lc.fsf@gmx.de> References: <87o8asu1mg.fsf@jpl.nasa.gov> <87sg03apj1.fsf@gmx.de> <87zgubr31n.fsf@secretsauce.net> <87pmv7o9hn.fsf@gmx.de> <87wnpfr25i.fsf@secretsauce.net> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="38836"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) Cc: 49714@debbugs.gnu.org To: Dima Kogan Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Sat Jul 24 20:45:20 2021 Return-path: Envelope-to: geb-bug-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1m7MeG-0009qO-Bs for geb-bug-gnu-emacs@m.gmane-mx.org; 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Sat, 24 Jul 2021 20:44:17 +0200 In-Reply-To: <87wnpfr25i.fsf@secretsauce.net> (Dima Kogan's message of "Sat, 24 Jul 2021 11:35:05 -0700") X-Provags-ID: V03:K1:KT+X/gS/SQWt2/rY7LsjNUf5QVdvDITD9Fl3Qq15xP2MkkBVlUP Vd2X8CphexjOF+9aCiTv4g7AKt4EjBmsrHAxSvZfQk7ZA5/pxfYmhbVqN6MB3WzVHhzL7Mj EwyR87mxISs/7ue6bRu2XoP7Ury3klOkxS3/D8YQF9CGcecRsPTSJ3oB4pZeX/pM+TU+sFn AHRk6FyjH1g6io751fpUQ== X-UI-Out-Filterresults: notjunk:1;V03:K0:Oa24C3wH7yk=:y877gx6D9FkV2SqBzaznKF gurRuX7v3ylmk0GB+kPNSG2r8wJvn26WEgeFP9DgeaI70srpntTjSzTE0BpxKPep54owAAlNc Z/jvhrB7XMQnzc9PQ+yXCkkWvglRkN33d3T7Q21JzNxByUqDE1WHw2F6/nLNAwMXYqcdJKLbm p10bTckB4yyMVmAYC+zV1XKh38mXANZhVuYBQ6tFhXmussREFQdv4SpN3ofQjUCI0bVpXHlfA 2Jy/SZ4JvGwZ3X9y6VOWKx8ez0Rg/LWRrjEgQCQbtXSkNrf64wG0PdMN05Nd8Un2mPqMtQ2UG 04hLdj6Sc6hp7mYk6H2TaQ6S6PCBiFw7RgYdrBOmparwqqGwgLloj0PAv99+zOZljyxlEvpG/ 25Lcy3KKvTmyGiNlJZa+hHD9vePZLMj6OJM/E8Ws1e6rn1C7J7Vlji4s9hcK+Ukg4npiwkUiJ LG0RcpfuJHon6kZ8b28MP1XOJF6cqyYQzTudgx2s8VBrjq412h+2GIaa//Z2bjdTXH+ShqaZR WgTcWwdXUgKappWUzZ4PKprnls3vtoyvwpDGLIlTU4lOzFK3/LVRWj4qLOqwz9+lDASJJAIrz JWIPwxVzE6qiPEICVoLdeF0RcWaGcuDI2Lt9/bAq9KFXXxrUr6LEM2VB5Vg4qIVMDrD82OeH9 9bFGk6Wp4YVaGUYB9c6njFCWaV7anBTlOFlM5wL+WW7YBfeeeet3xAt17fCEWQ9992dCu6FK8 c5pOqDx1kBW22pq4EzxL0Ji3wEwiNFLb6Vqcw06CRfIQixmBfKWRQv0vm3Bvb/K/LBScDZUx X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "bug-gnu-emacs" Xref: news.gmane.io gmane.emacs.bugs:210659 Archived-At: Dima Kogan writes: >>> There should be a loop, but emacs shouldn't be using all my CPU cycles >>> while waiting for user interaction. Emacs can select() on the ssh >>> process file descriptor, and sleep until the ssh process has stuff to >>> say. >> >> Well, I'm on Lisp level. I just have accept-process-output, and in my >> loop I check whether there is new output. There's no low level API to >> let Emacs sleep for the ssh process file descriptor. > > It just sounds unbelievable that emacs can't do blocking reads from the > lisp level. Let me look at (accept-process-output) accept-process-output could block. But it blocks the whole Emacs then, which isn't what we want.